The "Hello World" tutorial

Overview

This tutorial is designed to to give you a feel for what Intent Architect can do, and let you experience the common work flows of the tool. This tutorial covers the basics of:

• Creating an Intent Architect application
• Configuring your Architecture
• Designing your application through modeling
• Realizing your designs as code

By the end of the tutorial you will have built a complete ASP.NET Core web application, implemented using Clean Architecture design patterns, with some basic use cases.

This tutorial should take around 5 minutes.

Create your first Intent Architect application

• Open Intent Architect.
• Click Create a new application.

On the first screen of the wizard you can select your desired architecture. For this tutorial use the Clean Architecture .NET option.

• Select the Clean Architecture .NET template.
• Change the application name to HelloWorldTutorial.
• Check / change the Location field (this is where your Intent Architect application will be created).
• Click Next.

This screen allows you to configure your selected Architecture, for the tutorial you are just going to use the default configuration.

• Click Create.

• Intent Architect will now configure your application based on your choices in the setup wizard.
• You will be navigated to the Intent Architect Solution view.
• The Application's icon in the left pane is a spinner while Intent Architect downloads and installs Modules for it.
• When the process is complete the spinner will change to a static icon and the status at the bottom left of the UI will show Ready.

You have successfully created an Intent Architect application.

Next you will be designing the more functional aspects of your application, starting with Domain modeling.

Model your domain

The Domain Designer is where you model your business/problem domain (the concepts that exist in your problem space, what data they have, how are they related, etc.).

• Open the Domain Designer.

• Right-click anywhere on the grid, and select New Class.
• Change the name to Planet.
• Right-click on the Planet class, and select Add Attribute.
• Name the attribute Name of type string.
• Save the domain (ctrl+s).

Note

This is the simplest domain model possible for the purposes of the "Hello World" tutorial. Real world domain models are much more complex and interesting. If you want know more about domain modelling check out our Intent Architect Webinar on Domain Modeling in .NET.

Next you will be moving onto the Services Designer.

Model your services

In the Services Designer you describe your application services, which is the contract for how your application can be interacted with. This Designer also allows you to define which services are remotely accessible and how they are exposed.

• Open the Services Designer.

Lets create a service for your Planet entity.

• Right-click on HelloWorldTutorial.Services and select Create CQRS CRUD Operations.
• In the dialog window
  • Select Planet from the dropdown.
  • Click Done.

Intent Architect has created a minimalist CQRS style service for you with basic CRUD operations for your Planet entity.

Note

The Clean Architecture in .NET template has installed an optional CRUD feature, which is what you used to quickly create service definitions and it will create default convention-based service implementations for you. This is a feature which can be used as is, embraced and extended or skipped all together.

These service operations are currently only available within the application, your next step will be to expose these operations as a RESTful API.

• Click on CreatePlanetCommand.
• Hold down Shift.
• Click on GetPlanetsQuery.
• You should have all the Commands and Querys highlighted.
• Right-click on any of the highlighted items and select Expose as Http Endpoint.
• Save the Services (ctrl+s).

All the Commands and Querys should now be decorated with REST verbs and routes.

That's designing done, and now you are going to have Intent Architect realize this design as source code.

Integrate your design into your codebase

In Intent Architect there is a process called the Software Factory, this process is responsible for:

• Materializing your design as code
• Integrating that code into you codebase

So, lets see it in action.

• Click Run Software Factory (or press F5).

This dialog is presenting you a view of what Intent Architect wants to change in your codebase, giving you an opportunity to review it.

• Click Apply Changes.

At this point Intent Architect has generated all the code to fulfill your design.

• Click on the blue hyperlink at the bottom left of the Software Factory dialog.
• This will open a folder containing all the generated source code.

Note

Because there wasn't an existing codebase Intent Architect has scaffolded the entire solution. Intent Architect is not merely a scaffolding tool, it is a continuous codebase integration tool, i.e. as you make incremental design changes in Intent Architect it is able to integrate these changes back into the existing codebase on a continuous basis.

Now you can open up the solution in your C# IDE.

• Open the .sln file.

Tip

If you are curious about the architecture of this solution, check out our Intent Architect Webinar on Clean Architecture in .NET 7.

Run the application

Run the application in your IDE and you should be presented with a Swagger based UI which you can use to interact with the application.

In the UI you can see the 5 service operations you modeled earlier and you are now able to invoke them

Time to create your first Planet.

• Click on the Post operation.
• Click on Try it out, right hand side of screen.
• Update the name property in the Request body to hello world.

{
  "name": "hello world"
}

• Click the big blue Execute button.

If you scroll down a little you should see a Server Response with a code of 201 and in the response body there will be a guid which is the Id of your newly created Planet entity.

If you'd like to verify this:

• Copy to Planet id.
• Click on the GET operation, with route /api/planets/{id}.
• Click on Try it out, right hand side of screen.
• Paste the Planet id in the id text-box.
• Click the big blue Execute button.

You should get a response similar to this:

{
  "id": "3ba435f3-89e8-4282-a12d-5a7522524e2c",
  "name": "hello world"
}

Congratulations, you have successfully built your first application using Intent Architect.

At this point you should have some sense of what Intent Architect can do:

• Rapidly build applications.
• Configure your application architecture.
• Visually design your application and domain through modeling.
• Achieve better architectural adherence and consistency through automation.

Next steps

The next tutorial will take you step by step through building a simplified version of the Microsoft eShopOnContainers technology example.

Tutorial 2: Build an Application

Additional related resources

Intent Architect Webinar on Clean Architecture in .NET 7

Intent Architect Webinar on Domain Modeling in .NET